Optimal design method for main frame of wind turbine generator based on deformation technology

Abstract

The invention provides a wind turbine generator main frame optimization design method based on a deformation technology. The method comprises the steps: acquiring a main frame basic configuration used for optimization design; establishing mainframe structure deformation control; obtaining a main frame basic model; creating a finite element analysis model of the wind turbine generator; defining an optimization problem; generating test sample points; S7, creating an approximate model; solving an optimization problem; and judging whether the optimization problem solution is converged or not until the solution is converged to obtain an optimal solution. According to the method, a complex finite element simulation problem is simplified by means of key parameter identification, simulation problem dimensionality reduction and the like, and optimization design is carried out on the main rack of the wind turbine generator. By creating an approximate model between the deformation control parameters and the limit working condition strength, the fatigue accumulated damage and the weight of the main frame, the purposes of shortening the design time and improving the research and development efficiency can be achieved, the limit working condition strength, the fatigue accumulated damage and the weight characteristics of the main frame are comprehensively considered, and the main frame meeting the design requirements is obtained.

Description

technical field [0001] The invention relates to the technical field of wind power generation, in particular to an optimal design method for a main frame of a wind turbine based on deformation technology. Background technique [0002] Driven by the continuous development demand of the wind power market, the research and development of wind turbines by domestic OEMs is developing in the direction of large capacity and high conversion efficiency, and the related components of wind turbines will also increase in size and weight. The research and development of this synergy has been paid more and more attention. [0003] The wind turbine nacelle is mainly composed of main frame, bearing housing, main shaft, gearbox and generator and other components. The main frame plays a key role in connecting the upper and the lower and connecting the front and rear in the assembly. It bears the load of the wind wheel, the weight of the nacelle, the live load of operating vibration and the ex...

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Problems solved by technology

[0005] In view of this, the problem to be solved by the present invention is to provide a method for optimizing the design of the main frame of wind turbines based on deformation technology. Optimize the lack of design technology to solve the problems of long design period and heavy weight of the main frame to meet the requirements of high efficiency, high reliability and low cost for the research and development of the main frame of wind turbines

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